JP6995299B1 - Self-contained hammock for both indoor and outdoor use or self-contained tent-mounted hammock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be popular for outdoor activities, indoor hammocks, and aerial tents at home or at camping. I want to easily experience a different dimension of floating in the air. It seems to be easy to rotate and tilt for reading. SOLUTION: The two support legs have an arcuate rectangular cross section, are elastic, and are comfortable with micro-vibration of the entire structure. It will be a self-contained safety and security system for both indoor and outdoor use that does not require fixing on the pillars, beams, or outdoor tree trunks of the house. A groove is provided at the bottom of the rectangular cross section of the bow-shaped support leg, and two extended ropes are stretched in a ring shape with one closed wheel on the lower surface of the support leg to disperse the large tension concentrated on the apex and equalize it by itself. Can be supported. Easy length adjustment with pulleys. Easy to store. It is easy to move by car, and you can easily enjoy the flow of time that transcends everyday life, the floating aerial space of a different dimension, and the leisure activities of forest bathing. [Selection diagram] Fig. 1

Description

The present invention is a self-contained hammock or self-contained that can be relaxed in the air by supporting a large rope tension without the need to stretch ropes on tree trunks, house pillars, and beams in all indoor and outdoor situations. Regarding the ceremony aerial tent.

Hammock has the image of leisure in the forest that mainly connects trees, but recently, when there is a lot of stress, there is a need to enjoy floating in the air and relax. If possible, instead of hanging from the beams and pillars of the house with ropes inside the house, on tatami mats, on the floor, in corridors, balconies, gardens, and even in outdoor campsites, if you can enjoy it on your own, structures such as pillars, It does not have to settle in the tree. However, it is required that the support part does not damage the tatami mats. A stackable type that can be stored, transported, and moved is desirable. When I searched on the patent information platform, I found 27 cases when I searched for the keywords "hammock" and "simple". Of these, two cases (Patent Document 1) and (Patent Document 2) are applicable, but they are different from the present application because they support vertical pipe legs in two columns, and the atmosphere of the hospital does not make you feel relaxed. Searching for "hammock" and "indoors" resulted in 0 cases, and searching for "hammock" and "indoors" resulted in 21 cases. I couldn't say that I wasn't relieved and I was worried, so I searched for "hammock" and "on the floor" and found 4 cases. It depends on the pipe type, which is not always strong. A search for "hammock" and "garden" found 13 cases, which is one of the cases in (Patent Document 5), but it is different for the pipe type, which is not always strong, although it is simplified by using a chain for hanging.

Jitsuzensho 52-017102 Jitsuzensho 52-017103 Publication of patent application SHO 56-85307 JP-A-2007-0442111 JP 2012-29960

There are many ways to enjoy it with one support leg. You can freely change the illusion according to the situation, time slip that transcends everyday life, the best time flows, and you can easily enjoy a different dimensional space. As for the support, a cutting board and a stack of newspapers and magazines are sufficient.
You can relax indoors and outdoors without having to rope the trunks of trees, the pillars of your house, or the beams. Hammock has the image of leisure in the forest that mainly connects trees, but in today's stressful world, there is a need to enjoy floating in the air with a feeling of openness. If possible, instead of hanging from the beams and pillars of the house with ropes inside the house, if it is a self-contained type that can be fixed only with support legs on tatami mats, floors, corridors, balconies, gardens, and even outdoors campsites. , Other structures such as pillars, and trees can stand on their own without seeking settlement. However, it is required that the support part does not damage the tatami mats. If the two support legs are stacked, it will be easier to carry in, store, and carry and move by car to the campsite.
Generally, since the hammock pulls both ends of the rope, it needs to be supported and fixed at some point. If you are worried about bending or breaking due to unexpected load bias or shaking, you cannot relax. Mechanically, a large tensile force acts on the ropes at both ends. The more it is stretched with less deflection, that is, in an aerial tent where the rope is stretched almost horizontally, a large tensile force is applied. Most of the support legs of the hammock are made of hollow pipe material, but the load capacity is poor, there are many nodes, the force flow is poor, and the load limit is seen. For this reason, if the tension is too high, the hollow pipe support material will easily break for large bending. It is clear that there is a danger of falling from the head if it breaks, and that there is anxiety. FIG. 2 shows the component force of the pulling force applied to both ends of the rope by the weight P of the hammock and the aerial tent. For example, if the span L = 2 m and the deflection S is halved from 1 m to 0.5 m, the tension T becomes about 1.5 times. Further, when the deflection S is set to half of 0.5 m to 0.25 m, the tension T becomes about 1.8 times. In other words, it can be seen that the tighter the aerial tent is, the greater the tension is required, and the closer it is to the horizontal. On the contrary, it can be said that a hammock with slack does not require much tension.
A general hollow pipe material has a small cross-sectional height, a small resistance bending moment, and a feeling of anxiety. The support legs have strong tenacity against breakage and elasticity, and need to be safe and secure. For the support legs, a bow-shaped streamline that is elastic and easily transmits the force is effective. The entire support leg repels flexibly like a spring. It's just like a real bow, and the slight vibration transmitted from the entire support leg is also comfortable. A Venetian boat, a roughly concentric circle with a smooth and effective cross-sectional height, such as a canoe shape, or a approximately crescent-shaped streamline whose effective cross-sectional height changes in response to changes in moment. As a result, the resistance bending moment increases for the entire support leg. In addition, safety can be improved by standardizing a box shape with a rectangular cross section in order to make it resistant to torsional deformation. The approximately crescent-shaped figure tends to effectively change the cross-sectional height. FIG. 3 shows an example of a combination of two upper and lower curves forming a bow-shaped figure of a support leg. (A) 2 circles of concentric circles, (B) 2 circles moved to the center of the same radius, (C) 2 circles with a small circle on the top and a large circle on the bottom, (D) 2 circles with a large circle on the top and a small circle on the bottom. A circle, (E) a circle on the top and a parabola on the bottom, (F) a circle on the top and a circle on the bottom, and (G) two curves of a parabola on both the top and bottom. A nearly crescent-shaped streamlined figure is obtained. In the concentric circle, the cross-sectional height becomes uniform, and in the crescent shape, the height becomes maximum near the center of the span of the support legs and decreases toward the apex. A smooth bow can be obtained with two vertical lines of cross section having a uniform or variable height. However, these figures are adjusted so that the vicinity of the apex of both ends of the support leg where tension is concentrated is not extremely thin. FIG. 4 shows a perspective view of the support legs. Naturally, the bow-shaped support leg needs a cross-sectional shape that can withstand external forces and its effective height. If the support leg member has a rectangular cross section 9 having a large resistance bending moment, there is a sense of security. The distance between the vertical curves of the support leg member, that is, the distance in the direction perpendicular to the center lines of the two curves is the cross-sectional height h. The rail-type and I-type cross-sections 10 are not so inferior in resistance bending moment to the rectangular cross-section 9, and are economical without waste, but it is necessary to study torsional deformation. In this way, the support legs have an elastic bow shape, the support legs are integrated without any bending points or nodes that are structural weak points, and the support leg members have a rectangular cross section 9 with a large resistance bending moment, and the entire support legs. The self-determined problem can be solved if the elasticity corresponding to the deformation of the shape and the degree of concentration of the force can be relaxed and the load can be taken care of. If the box shape with a rectangular cross section is filled instead of being hollow, or if partition walls 25 at equal intervals are inserted inside, or if the outer shell is made of a thick plate, the rigidity is increased and the torsional deformation is further strengthened. From a manufacturing point of view, the rail type and I type are easier, and if you use a thick steel plate that can resist torsional deformation, or if you put ribs that will be partition walls 25 on the left and right sides of the web of the central axis, the torsional strength will be increased. No problem.
Next, if the force concentrated on the apex is applied to the lower part of the support leg, the force is further dispersed, and the economic efficiency of cross-sectional reduction and the safety of the entire structure are increased. As shown in FIG. 5, if the rope 3 is extended and closed once with the total length of the lower surface of the support leg by utilizing the length of the curved surface of the bow shape, the force applied to the rope can be distributed to the entire support leg and the support can be supported. The dispersed force can be firmly handled as a reaction force on the leg body side. The dispersive force and the reaction force are equally balanced. A groove is provided along the curved surface at the lower part of the cross section of the support leg member, a rope is stretched inside, and the tension applied to the rope is directed toward the inner wall of the groove to smoothly disperse the force over the entire bow-shaped support leg body. The method can solve the self-determined problem. That is, the two extension ropes of the two support legs of the hammock or the aerial tent are each made into one wheel, and the rope is hung on the entire support leg to withstand a large tension with the cross-sectional force of the support leg member. Overall adhesion, friction, and fixation work between the and the support legs, and the force can be dispersed. When the rope is rotated on the lower surface of the rectangular cross section shown in FIG. 5, (A) the groove 12 for inserting the rope into the lower flange 11B of the rectangular cross section can be manufactured along the curved surface from the beginning. In the rail type and I type, (B) a groove 12 can be added to the lower flange, or (C) the rope 3 can be hooked in the space under the upper flange 11A. (D) If the partition wall 25 is provided, it can be passed through the hole 26 of the scar wrap.
The rope is one wheel around, but it is easy to adjust the length, and when the hammock is set, the rope between the two vertices hangs down and is slack, so bite the log 33 like a pulley there. If you wrap a rope around a log, you can shorten it by one roll as much as the circumference. It's easy to find the right tension and sway to your liking. Increasing the tension allows for an aerial tent.
Further, as another method of fixing the rope to the support leg, there is also a method of combining the two extended ropes shown in FIG. 6 into one wheel and turning it around the horizontal cross member 8 in the middle of the diagonal member portion of the support leg. It can solve the problem of distributing or distributing the force concentrated on the apex. Alternatively, as a further method, the extension rope shown in FIG. 7 can be wound around the diagonal member of each support leg from the apex and fixed in the vicinity of the horizontal cross member in the middle. The frictional resistance with the legs works effectively over the entire extension, and there is also a secondary effect of increasing the strength by tightening the diagonal members of the support legs, so there is the problem of distributing or distributing the force concentrated on the apex. Can be solved.
In order to overturn any of these support legs in the lateral direction, it is necessary to step on the two support legs shown in the front views of FIGS. 6 and 7. Horizontal cross members are required everywhere between the two support legs.
Since the vicinity of the bottom that supports the support legs with the base is naturally a curved surface, for stability, (A) a part of the support legs should be a horizontal straight line side, or (B). Select whether to attach a detachable attachment with a horizontal straight line that matches the curved surface, or (C) set up a pedestal and fix anchors on both sides away from the lowest point in the center, and simply support the balance with newspaper or magazine. .. For those who want to enjoy the feeling of swimming in the air like a cradle, the curved surface is left as it is, but even in this case, it is desirable to provide a pedestal on the tatami mat to prevent wear with the support surface. In addition, it is necessary to devise the tip of the rectangular support portion of the support leg. (A) Finish the tip of the support leg horizontally in FIG. 9, (B) Finish the tip of the support leg into a smooth rounded curved surface, (C) Keep the cross-sectional shape of the support leg as it is, and put a filler in the tip. Put on round shoes, (D) Keep the cross-sectional shape of the support legs as it is, provide a recess on the inclined surface on the thick pedestal, (E) Detachable attachment that matches the bottom of the support legs, horizontal with a fixed length There is a method of providing a straight pedestal and a jig pedestal.
There is also another way to enjoy it. For those who want to enjoy reading in a hammock, the head position can be kept high by rotating the support legs to raise one apex and lower one apex. Since the reading hammock is in a rotated state, the lowest point of the bow shape is naturally on the apex side lower than the central part. For this, a figure with the lowest point in the center shifted separately, or (A) the pedestal laid under the lowest point shown in FIG. 10 is lengthened, and the uplift on one apex side with the lower support leg is used. Anchor that suppresses lifting, tie a wire between the pedestal, or (B) prepare a detachable attachment and jig that prevents rotation according to the curved surface of the support leg with the bottom horizontal, or (C) ) It is easy and clear if you lay a support plate like a cutting board in the center and stack newspapers and magazines firmly on the fall side.
With these, a safe and secure self-contained hammock or aerial tent for both indoor and outdoor use will be realized. It can be adapted to versatile and multi-use such as so-called amphibious for both outdoor and indoor use, and it is easy and enjoyable. It is desirable that the hammock and the rope of the aerial tent can be used together, and it is easy if it can be extended with a joining device, but it depends on your preference.

In order to solve such a problem, in the self-contained hammock or self-contained aerial tent for both indoor and outdoor use of the present invention, the two support legs are supported at the center of the strut, and no joint node is provided in the middle of the strut. It forms a bow shape with apex parts at both ends, and the support leg member has an approximately rectangular cross section, an approximate rail type, or an I-shaped cross section, and the cross section height of the support leg member is uniform over the entire support leg. Or, by making the cross-section height gradually changed so as to be the maximum near the bottom of the center of the strut, the support legs are made into a streamline of approximately concentric circles or a crescent shape in side view. It is characterized by.

Further, in the self-contained hammock or self-contained aerial tent for both indoor and outdoor use of the present invention, the upper and lower edges of the cross section of the support leg member are concentric circles of 2 circles, centered of the same radius is moved to 2 circles, and large and small. It is characterized by being composed of two upper and lower curves consisting of two circles with different radii, a circle and a parabola, or a combination of parabolas.

In addition, the self-contained hammock or self-contained aerial tent for both indoor and outdoor use of the present invention
Two ropes in a hammock or aerial tent were extended from the apex, respectively, and closed in one round each along a groove provided in the lower part of the cross section of the two support leg members or a hook in the upper part of the cross section. It is characterized by being stretched with one wheel.

In addition, the self-contained hammock or self-contained aerial tent for both indoor and outdoor use of the present invention
Two ropes of a hammock or an aerial tent are extended from the apex, respectively, and a horizontal cross member or a protrusion arranged between the diagonal members of the two support legs is circulated between the two support legs. As a result, it is characterized by having one closed wheel.

Further, in the self-contained hammock or self-contained aerial tent for both indoor and outdoor use of the present invention, two ropes of the hammock or the aerial tent are extended from the apex portion, respectively, and the slant of each of the two support legs. It is characterized in that it is wound around a material portion and fixed to each of the horizontal cross member portion or the vicinity of the protruding portion arranged on the diagonal member portion of the two support legs.

Depending on your mood, you can choose from a cradle hammock, an aerial tent at a secret base, or even rotate to raise the apex on one side for versatile, illusionary, and multi-use for your hobby reading. You won't get tired of it as an outdoor or indoor leisure activity, and it's super fun. In particular, I am excited and have high expectations for the enjoyment of reading. If you sway like a cradle, you will travel back in time to your childhood and return to innocence. In the aerial tent, you can shut out from the noisy world. Anyway, it must be fun to relieve daily stress. It has to be interesting. You have to make sure you don't get bored. Not getting in the way of storage is also an important requirement for small Japanese houses. If you pull out the horizontal cross member, you can stack the two support legs on top of each other, so you can lean against the wall and it will not get in the way. Easy to carry and move. The elastic bow-shaped locking also invites a slight vibration of the whole and is comfortable. It feels like a dream and falls asleep immediately. If you think of this dreamy feeling even when you go to bed, you can expect a side effect that leads to sleep induction and a good night's sleep. The self-contained bow shape is beautiful and aesthetically pleasing, and is a secret pride. If you paint it in your own color, it will be one in the world. It's fun to hum on a long-distance drive by putting it on the ceiling of the car. Be careful not to brag too much even if you don't brag. Of course, you can enjoy a different dimensional space with the original floating in the air.
A special time that transcends everyday life flows with a different dimension floating in the air, floating in the air, and comfortable shaking. What a luxury it is at the same time. You can enjoy a higher level of fun and enjoy a special leisure mood. Forget the hustle and bustle and get rid of it. Soaking in the sunlight through the forest will refresh your body and soul, and the chirping of birds will become an orchestra. It's a little after returning to my daily life, but even on the balcony of the condominium, I feel like an open-air bath due to the breeze.
Traditional hammocks, especially aerial tents, have high tensions that require ropes to be fixed to the pillars, beams and trunks of outdoor trees, which is not easy to enjoy. Therefore, by devising a safe and secure self-contained formula that does not rely on anything else and establishes itself, a hammock or aerial tent for both indoor and outdoor use was realized. If it is simply fixed to the apex of the support leg, a large force will be concentrated on the apex. It led to the reduction and dispersion of. Moreover, by making the cross-sectional height of the support legs uniform in FIG. 3 (A), the production becomes easy, and (B) the crescent shape with the center moved by the same radius has less material production loss. Alternatively, by changing the cross section from (C) to (G) as it is, the force is transmitted without waste and it becomes safe. It can form a bow-shaped curve and provide a beautiful concentric, crescent-shaped. It can be said that the beauty is more satisfying nowadays when it is blocked. If you rotate and raise one side of the apex, the head position in the hammock will be higher, and it will also be for reading. It can be said that this is also an important element and direction to keep you from getting bored. Since the lowest point can be moved simply by tilting the circles and parabolas that make up the support leg figure, it is stable and easy to adjust using the pedestal. When not using the support legs, the two support legs can be stacked by removing the horizontal cross member of the support legs, making it convenient for storage, portable, and easy to install. Since it is a self-contained type, there is no need for a large tree trunk, house pillars, or beams that take a reaction force at the installation location, and it has the greatest merit of being suitable for both indoor and outdoor use. It has succeeded in taking a large tensile force by itself. It has succeeded in distributing the tension evenly in the entire support leg shape without providing a fixing portion at one point, and as a force toward the inside of the entire support leg. If the total length of the support legs is 2 m to 3 m, it does not have to be a disassembly type or an assembly type. It is lower than the ceiling height of the living room and can be carried in as it is at the time of purchase, so you can enjoy it indoors. By stacking two support legs in a bundle, it is far safer than the foldable type that halves in the center, and the problem of storage space is solved. It's easy to carry on the ceiling of a car, it's easy to move around the camp, and you can brag about it even if you don't brag about it. In the condominium, it feels like an open-air bath where you can enjoy more secrets on the veranda. If the bottom of the support leg is a horizontal straight line, it will be stable, but it can be locked even if it is a curved surface as it is, which is fun. If a board or mat is laid separately on tatami mats, it will be stable and will not damage the bottom of the supporting legs, folding, or the ground. As for the board, it is sufficient to purchase a resin cutting board separately. Newsprint, magazines, etc. also have cushioning properties, and I am simply happy that they are useful without making them large-scale anchors.
In the shape of the support leg, the hammock at the center of the apex of the front view triangular leg type, the trapezoidal leg type with the apex widened, the hammock for the rectangular leg type of the parallel bar, the aerial tent, etc. Since it can be adjusted, there are various ways to enjoy it every day, depending on your mood. As for the horizontal horizontal members, 7 long lengths, 2 medium and long lengths, 2 medium lengths for both (A) and (B), and 2 short lengths can be easily diverted and assembled. In addition, there are various ways to enjoy it depending on how the rope is stretched, tension, and how it hangs down. To adjust the length of the rope, it is easy to wind it around a circular cross section like a log-shaped pulley. With one roll, the circumference can be adjusted, that is, with πD, the length can be adjusted to about 3 times the diameter. If you wind it around a log with a diameter of 10 cm, you can adjust the length and tension by about 31.4 cm. With a diameter of 5 cm, fine adjustment of 15 cm is possible.

Image of how to enjoy Side view (A) Hammock (B) Inclined reading hammock (C) Aerial tent Exploded view of rope tension Example of curve configuration of the upper and lower surfaces of the bow-shaped support leg (A) Concentric circles (B) Circles that move in parallel with the center at the same radius (C) Small circle on the top, large circle on the bottom (D) Large circle on the top, small circle on the bottom (E) Upper circle and parabola (F) Parabola and lower circle (G) Parabola with different lowest points Perspective view of bow-shaped support leg, cross section of support leg member (A) Rectangular cross section (B) Rail type, I type cross section Side view of the extension rope received over the entire length of the support leg, cross-section of the member and position of the rope When each of the two ropes makes a round around the underside of the support leg, the reaction force is distributed and carried inside the support leg. Explanatory drawing showing that (A) Groove and rope with rectangular cross section (B) Rail type, groove and rope on the lower surface of I type cross section (C) Rope hooked on the hook on the lower surface of the upper flange, (D) Bulk partition rib Rope through the scallop hole Front view of the support leg in which the extension rope is turned by one wheel on the horizontal cross member of the diagonal member 3 examples Explanation drawing that two ropes are turned around the horizontal cross member and the protrusion in the middle of the diagonal bar to make one wheel. (A) Triangle type (B) Trapezoid type (C) Rectangle type of parallel bars Front view of a support leg in which an extension rope is wound up to the vicinity of the horizontal cross member of the diagonal member 3 examples Explanatory drawing (A) in which two ropes are wound around the diagonal bar in the middle and fixed in the vicinity of the horizontal cross member. Triangle type (B) Trapezoid type (C) Rectangle type of parallel bars Example of grounding of the bottom of the support leg (A) Side view example with the bottom of the bow shape as a horizontal straight line with a fixed length (B) Detachable attachment that matches the bottom of the bow shape, a pedestal with a fixed length and a horizontal straight line Example of side view with a jig pedestal (C) An example of stacking newspapers, magazines, etc. on both sides of a curved surface to achieve a good balance. Example of devising the tip of the rectangular support part of the support leg (A) Example of cross-sectional view in which the tip of the support leg is finished horizontally (B) Example of cross-sectional view in which the tip of the support leg is finished in a smooth rounded curved surface (C) Example of cross-sectional view Cross-sectional view example (D) Cross-sectional view example in which a filler is put in the tip and round shoes are put on. E) A side view example with a fixed length, horizontal straight pedestal and jig pedestal, which is a detachable attachment that matches the bottom of the support leg. 3 examples of tilting hammock for reading to prevent it from tipping over (A) An example of taking an anchor to prevent lifting and increasing the rigidity of the pedestal to extend it (B) An example of supporting it with a removable attachment that matches the curved surface (C) Rotation backward , Example of providing a pedestal for fall prevention newspapers and magazines

The more horizontally the hammock rope is stretched, the more tension it will have. Therefore, if the tension is too high, the hollow pipe support material has a joint node, which is a weak point, and is easily broken. Further, since the hollow pipe material itself is hollow and has no height and the resistance bending moment is not sufficient, in order to provide sufficient safety in the present invention, the two support legs have an elastic bow shape and nodal points are provided. The cross section of the support leg is standardized as an approximately rectangular cross section where the height can be secured and the resistance bending moment is large. The cross-sectional height is based on an approximately concentric circle with an equal cross section for the sake of simplification of manufacturing, and changes without waste according to external force and bending moment, and can be viewed from the side to withstand a large tension. However, if it becomes too thin near the apex, the yield strength will be lost, so it is easier to make it as it is. The material is basically steel plate, but wood, plywood, laminated lumber, plastic, reinforced plastic, aluminum, duralumin, or a composite of them can also be considered. Even when the cross-sectional shape is a rectangular box shape and the outer shell is a strong steel plate, it is preferable to maintain the shape inside the box shape by filling with mortar so as not to be deformed or crushed. However, the material to be filled needs to be examined. Since the rigidity of the mortar increases, the rigidity increases and it becomes difficult to deform, but it becomes heavy as a whole and it becomes difficult to move. Effervescent mortar is light but does not increase in strength. A hollow structure in which the hollow cylinder 34 shown in FIG. 5 is set and the mortar 35 is filled between the steel and the cylinder is light and strong, so it can be said that it is best if it can be constructed well. It is also effective to insert reinforcing partition walls at regular intervals against twisting. If a groove for the rope is provided at the lower end, the round groove can be easily made by processing at the time of manufacture in the steel plate.

FIG. 4 shows a perspective view of the support leg and a cross-sectional view of the support leg member. For the two bow-shaped support legs with excellent elasticity, the standard cross-sectional shape formed between the two curves on the upper and lower sides of the leg is an approximately rectangular cross-section with high resistance to bending moment. However, rail-type and I-type cross sections, which are easier to manufacture and whose resistance bending moment is not much different from that of a rectangle, are also possible. The arcuate support legs in the side view are (A) 2 circles of concentric circles, (B) 2 circles with the same radius moved to the center, (C) 2 circles with a small circle on the top and a large circle on the bottom, (D). ) A large circle on the top and a small circle on the bottom, 2 circles, (E) a circle on the top and a parabola on the bottom, (F) a parabola on the top and a circle on the bottom, and (G) a parabola on both the top and bottom. Form. Of course, it may be drawn freehand. The distance between the two curves and the distance are the cross-sectional height h for resisting the bending moment. If the steel plate is cut by using the approximately crescent-shaped (B) circle of the same radius as shown in Fig. 3 with the center moved, the circle of the next support leg can be contacted and cut by simply shifting the steel plate by the same radius. There is no material loss and production is fast. In this application, many figures are drawn in concentric circles, but the cross-sectional height is uniform and it seems easy, but the material loss is large. In the crescent shape, the height is maximum near the center of the span of the support legs and decreases toward the apex. In the rectangular cross section, if the outer shell is made of steel plate and filled with mortar, it can resist torsional deformation and crushing. Partition walls may be provided inside at equal intervals. If it is a rail type or I type, there is a possibility that the steel plate on one side of the vertical can be omitted. However, it is necessary to study because the torsional deformation will be inferior.
Structurally, it is also necessary to increase the crotch opening resistance and fall resistance between the two support legs at the bottom of the diagonal part that serves as a bridge. The two support legs are viewed from the front, and there are a triangular type, a trapezoidal type, and a rectangular type with parallel bars. Since the horizontal force of the crotch opening acts on the two support legs, horizontal cross members are provided everywhere between the two support legs. Especially in the vicinity of the lower part, increase the number. The horizontal cross member can be detached by providing a horizontal through hole 28 in the flank plate 37 having a rectangular cross section of the support leg so as to correspond to the three types of front view shapes, and the two support legs can be stacked and stored. , Convenient for transportation. The length of the horizontal cross member is the longest for the rectangular type of parallel bars, and it can be diverted, but it is better to prepare it according to the length according to the above three types. This is because the thread in the middle of the cross member has a slight cross-sectional defect. For tightening the horizontal cross member, it is advisable to provide an angled filler to make it a vertical surface. In the case of hollow mortar, the horizontal through hole penetrates the hollow cylinder 34, so it is necessary to consider whether to incorporate the hollow cylinder in the horizontal direction or to make a hole after the mortar is sufficiently hardened.

When fixing at the vertices at both ends of the bow-shaped support leg, the two ropes of the hammock remain at two, or the two ropes are collectively fixed at the vertices. In this case, a large force is concentrated on the apex, so sufficient strength design is required. Since the apex of the crescent-shaped support leg becomes thin, it is also useful to wrap the wire around the diagonal member to reinforce the strength of the support leg. Also, if the hammock ropes are grouped together and concentrated on the apex of the triangular legs when viewed from the front, it will be easier for the hammock to roll over due to shaking, so it is better to widen the distance between the two support legs. It goes without saying that if the ropes are separated into two ropes, the front view of the support legs becomes more stable as the trapezoidal shape and the rectangular shape of the parallel bars become. In the aerial tent, the tent itself on the rope falls over in the triangular type. When viewed from the front, the two vertices are horizontally spaced apart from each other to form a rectangular type support type of the parallel bars (C) shown in FIGS. 6 and 7, and the two ropes are stretched in parallel for stability.

In the method of providing a rectangular cross section of the support leg member, a rail, and a groove at the bottom of the I-shape, and hanging the rope over the entire curved surface length of the support leg, the force concentrated on the apex is distributed over the entire support leg and the entire length, and as a structure. Also increases safety. For rails and I type, it is also possible to hook a rope on the center side under the upper flange, which is economical without processing. Stability is further increased by closing the two ropes of the hammock or aerial tent around each support leg in a single wheel shape. By using one rope as one wheel, the hammock is bent and the reaction force is dispersed and handled inside the support leg member. The length of the extension rope requires the length of the outer circumference of the support leg. A rope with a length that is at least twice the length of the hammock rope that is fixed at the apex forms a single closed wheel. When the rope is stretched out of the lower surface of the member cross section of the support leg, the rope protrudes and is trampled at the central bottom portion. Provide a groove to store the rope inside. From the aesthetic point of view, it is advisable to provide a groove as a whole, pass a rope through it, and attach a decorative board 14 to the outside. Since the rope hangs down at the hammock portion in the air at the center of the span L, it can be easily fitted into the groove of the support leg like a bicycle chain. The rope can be easily inserted even afterwards by attaching a long wire and pulling it. The amount of deflection is set based on the initial assumption. Although it is one wheel, the length can be adjusted easily by inserting a log 33 like a pulley in the middle because the rope between the two vertices hangs down and is slack when the hammock is set. Can be adjusted. You can find the appropriate tension to your liking. For example, if one roll is made on a 10 cm log, it can be shortened with a circumference of about 10π = 31 cm. However, this must be adjusted with the knowledge that the tension of the hammock and the rope of the aerial tent will increase accordingly. At the same time, it must be understood that if the amount of deflection in the center on which a person rides is halved, the tension will be nearly 1.5 to 2 times.

It is not always necessary when the material is steel plate, but it is double safe if a pipe is laid in the groove in case the diagonal part suddenly breaks. It is conceivable to provide a groove in an arcuate rectangular cross section and bury the pipe. It is advisable to put a filler in the boundary surface with the pipe or fill it with a soft material around it. In order to increase the strength and safety, a full-section pipe or a split pipe is preferable. If the finish of the groove is rough, the rope will wear, so as a measure against wear, a half-split pipe may be used, or a rubber hose may be used in the extreme. The rope should be laid in advance for pipes of all cross sections. The rope can be easily inserted even afterwards by attaching a long wire and pulling it. When providing a groove in the cross section, consider covering the bottom with a decorative plate.

If the bottom of the support leg that touches the curved surface is a straight part that is partially horizontal when viewed from the side, it will be more stable, and wear, shaking, and rotation of the tatami mat can be suppressed. In this case, you have to put up with the feeling of locking, but it is more fun to lock the curved surface as it is, so devise the tip of the support leg. Since the rectangular support legs have an angle of 90 degrees at the tips and bottoms of the two legs that come into contact with the floor, as an alternative, either (A) the bottom surface of the rectangle shown in FIG. 9 should be finished horizontally, or (B) smooth. Whether to finish it with a rounded curved surface, (C) put a filler 29 and put on something like a sturdy round shoe 36, or (D) make a pedestal of a plank and provide a groove 16 according to the inclination ( E) It is also conceivable to prepare a detachable pedestal and attachment 18 that match the curved surface of the bottom of the support leg. It goes without saying that if the bottom is finished horizontally, the tip will become a trapezoid like a horse's claw, but since the horizontal cross member takes horizontal force, it will not bite. For the support part on soft ground, it is advisable to prepare a resin cutting board, a thick plate, and a mat on and underneath to distribute the load.

It is important that the tilted hammock for reading, which is rotated and has one apex raised, can be adjusted to a comfortable posture. The tilt angle can be adjusted freely. However, it can be said that the limit is up to 45 degrees due to the fall due to rotation.
In a tilted hammock, the lift of the uplift that works on one of the lower vertices with the lowest point as the center point, the balance of the left and right moments created by the center of gravity of the person's weight, and the ground pressure to prevent it from sinking into the ground, etc. Find the length, width, and thickness of. For uplifts that fall due to rotation, pull them from the lower apex with a wire rope or the like and anchor them to the pedestal. If possible, extend one end of the pedestal to the ground position just below the high apex on one side so that it does not get stuck in the ground, etc. It is safe from the left and right moment balance. For falls due to rotation, the length of the pedestal beyond the support point and sufficient rigidity so that the downward resistance moment at the lowest point and the support point is larger than the lift moment obtained by subtracting the anchor fixing force from the uplift. To design. If the pedestal is short, the moment of falling backward becomes dominant and the whole falls, so it can be said that it is a stepping stone. If the pedestal is thin, a force that warps up to the end of the anchor part acts, so it is necessary to lay a rail or the like under the pedestal so that the force can be sufficiently transmitted without deformation and the resistance moment is increased. (A) An example in which an anchor of an uplift is taken and a rigid pedestal is provided as shown in FIG. (C) An example of stacking newspapers, magazines, etc. as a cradle so as not to tip over is shown. It is also an option to put a weight on one end of the anchor part of the pedestal in order to reduce the uplift.

1 Hammock 2 Aerial tent 3 Rope 4 Support leg, support leg member 5 Apex 6 Bottom, near the bottom in the center of the flange 7 Diagonal part 8 Cross member, Horizontal cross member 9 Rectangular cross section 10 Rail type, I type cross section 11 Cross section height h, (A) Upper flange, upper edge, upper (B) lower flange, lower edge, lower surface, lower 12 grooves, rope hooking part 13 pipe 14 decorative plate 15 pedestal of reaction force 16 thick plate to disperse rope as one wheel , Groove of stopper with diagonal angle 17 Member section with horizontal straight line near the bottom of the curved surface 18 Detachable attachment along the curved surface near the bottom of the curved surface, Adjustment jig 19 Arranged on both sides of the pedestal near the bottom of the curved surface Newspaper, magazine 20 People reading, books in hand
21 yen, center line of inclined circle 22 Anti-falling, anchor 23 for uplift measures 23 Pedestal 24 Horizontal pedestal 25 for preventing falling backward Horizontal pedestal 26 Scar wrap hole 27 Supporting leg of horizontal cross member Protruding part 28 from flank plate Horizontal through hole 29 Angle adjustment filler 30 Attachment, Adjustment jig 31 Stacked newspaper, Magazine 32 Support base 33 Slider, Log 34 Hollow cylinder 35 Filled mortar 36 Round shoes 37 Flank plate x Center of circle

Claims (5)

It is a hammock that hangs between two apex with two ropes as two, or hangs two together as one. A bow shape having apex portions at both ends is formed without providing a node of the joint in the middle, and the cross section of the support leg is a vertically long approximately rectangular cross section or an approximately I-shaped cross section having a height larger than the width. The cross-sectional height of the support leg is made uniform over the entire support leg, or the cross-sectional height is gradually changed so as to be maximum near the bottom of the center of the support leg. It has a generally concentric circular or approximately crescent-shaped streamline in the visual sense, and the two support legs prevent lateral fall with the open leg type of either the triangular type, the trapezoidal type, or the rectangular type of the parallel rod in the front view. A self-contained hammock that can be used both indoors and outdoors. Two ropes of the hammock are extended from the apex, respectively, and one wheel is closed once along the groove provided in the lower part of the cross section of the two support legs or the hooking part in the upper part of the cross section. The self-contained hammock for both indoor and outdoor use according to claim 1, wherein the hammock is stretched. The two ropes of the hammock are extended from the apex portion respectively and wound around the horizontal cross member portion arranged between the diagonal members of the two support legs or the protrusion from the support leg flank plate of the horizontal cross member. The self-contained hammock for both indoor and outdoor use according to claim 1, wherein the one wheel is closed by horizontally crossing between the two support legs. The two ropes of the hammock are extended from each of the apex portions, wound around the diagonal members of the two support legs, and arranged between the diagonal members of the two support legs. The self-contained hammock for both indoor and outdoor use according to claim 1, wherein each of the horizontal cross members is fixed in the vicinity of a protrusion from the support leg flank plate . In the hammock according to any one of claims 1 to 4, the hammock is a hammock in which two ropes between two vertices are stretched approximately horizontally and a tent is mounted on the ropes, and the hammock is based on the two support legs. A self-contained tent-mounted hammock for both indoor and outdoor use, which is characterized by the open-legged type of either a trapezoidal type or a rectangular type of parallel rod when viewed from the front.

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